KR101543437B1 - Vibrationless rock breaking apparatus - Google Patents

Abstract

The present invention relates to a vibrationless rock breaking apparatus. According to the present invention, a rock breaking apparatus, which is inserted into an insertion hole (10) formed in rock to extend the insertion hole to break rock, comprises: a cylinder (100) wherein a rod (110) is installed; a hollow shaft (200) inserted into the insertion hole (10); a core rod (300) connected to an end portion of the rod (110) to be accommodated in the inside of the hollow shaft (200); and an extended block (400) inserted into or drawn out of a block drawn hole (210).

Description

{Vibrationless rock breaking apparatus}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-free rock breaking apparatus, and more particularly, to a vibration-free rock breaking apparatus having a plurality of insertion holes formed in a road or a tunnel, So that cracks are generated in the rock mass, and the rock mass is crushed by vibrationless operation.

Generally, in various civil engineering construction such as construction of roads or tunnels opened on mountainous terrain, various types of rocks are obstructive factors in road construction depending on the geographical characteristics, and when rocks are obstructed in construction, It is constructed by removing the rock through.

The rock breaking process according to the conventional road construction includes a method in which a plurality of insertion holes are formed in a rock through a drill or the like and then an explosive is installed in the insertion hole to remove the rock through blasting and using a striker such as a breaker And rock breaking and crushing methods.

In the case where the rock is crushed by the explosive or hitting the rock through the equipment, there is a problem that noise and vibration are caused in the working site as well as the surrounding environment. Also, there is a problem that cracks are generated or collapsed in surrounding buildings or rock walls due to vibration, There was a problem that it posed a risk of a safety accident.

Accordingly, there are proposed a rock crushing apparatus for reducing the noise and vibration while preventing the risk of safety accident in removing rocks that are unnecessarily exposed.

For example, as shown in FIGS. 1 and 2, a plurality of insertion holes 10 may be formed in a rock bed, and a rock breaking apparatus 20 may be installed at a front end of a boom of a movable movable unit 30 such as a backhoe, When the rock crushing apparatus 20 is inserted into the insertion hole 10 and the rock crushing apparatus 20 is operated, the wedge 21 included in the rock crushing apparatus 20 is moved forward While the liner 22 and 23, which are slidably contacted with the both inclined surfaces of the wedge 21, are spread on both sides, and the rock is crushed.

However, in the above case, the slider of the wedge pushes the liner in contact with the liner, resulting in a large frictional resistance, thereby causing friction noise and equipment to be easily damaged.

In order to solve this problem, the above-mentioned technology has been improved and Patent Registration Nos. 10-0294476 and 10-1424789 have been proposed.

In the case of the above-mentioned patent registration No. 10-0294476, a tubular body; A cylinder extending from one end of the body; A wedge having both side portions formed on an inclined surface in a longitudinal direction and extended to the cylinder axis of the cylinder so as to penetrate the body; A liner in which a pair of bar-like members are brought close to each other, one end of which is inserted into the other end of the body and is slidable in mutually opposite directions, and the opposite sidewalls are inclined surfaces corresponding to the inclined surfaces of the wedge; At least one or more rigid grooves having a predetermined width and depth in the longitudinal direction of the outer wall of the both side liner are formed so as to have a shape that is uneven in correspondence with the inner wall of the insertion hole in the longitudinal outer wall of the two side liners, .

However, in the above case, as in the embodiment, the wedge which moves back and forth according to the operation of the cylinder slides in the surface contact state with the outer circumferential surface of the liner, resulting in a large frictional resistance and being easily damaged due to friction as well as noise .

In addition, in the case of the above-mentioned Japanese Patent Registration No. 10-1424789, a plurality of rotation extension blocks are provided in the middle, so that a mechanical expansion method is used instead of a friction method.

However, since the strength of the connecting portion of the expansion block is low, the above-described technique fails to overcome the pressure during the rock breaking process during the application of the field, so that the components are easily damaged and the force can not be easily transmitted to the expansion block.

Patent Publication No. 0294476 (Apr. 17, 2001, rock crushing apparatus) Korean Patent Registration No. 1424789 (2014.07.23, Rock Breaking Device Using Rotating Expansion Method and Rock Breaking Method Using It)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a method of disassembling a rocking block by opening an expansion block by advancing a core rod inserted in an insertion hole formed in a rock, So that the rock mass can be crushed by vibration-free motion.

It is another object of the present invention to provide a vibration-free rock crushing apparatus capable of preventing damages of a core rod and an expansion block by preventing foreign matter such as stone powder from entering into a hollow shaft and operating smoothly.

In order to achieve the above object, the present invention provides a rock breaking apparatus for breaking a rock by being inserted into an insertion hole (10) formed in a rock and extending the insertion hole, the rock breaking apparatus comprising: (100) having a rod (110) which is reciprocated according to a piston motion of the piston (100); Two or four block draw-out holes 210 are formed on the outer circumferential surface of the cylinder 100 so as to be opposed to each other with the rod 110 fixed to the end of the cylinder 100 and inserted into the insertion hole 10 A hollow shaft (200); A core rod 300 connected to an end of the rod 110 and accommodated in the hollow shaft 200 and formed of a sloped surface 310 that is inclined gradually toward the end of the surface facing the block drawing hole 210, ; One end of the core rod 300 is coupled to the core rod 300 and the other end of the core rod 300 is inserted into the block lead-out hole 210, And an expansion block 400 which is slid on the core rod 300 and is pulled in or drawn out from the block drawing hole 210. The core rod 300, to which the expansion block is coupled, When one of the expansion blocks 400 is installed, one surface of the outer circumferential surface of the core rod 300 facing the other is formed of the inclined surface 310, and the other surface of the core rod 300 is formed into a plate And are formed of parallel planes (320) parallel to each other.

One or more lubricant grooves 330 are formed on the inclined surface 310 along the longitudinal direction of the core rod 300 and a second lubricant groove 410 is formed on one surface of the expansion block 400 in a regular or irregular manner .

delete

Guide grooves 340 are formed at both sides of the parallel surface 320 at a predetermined depth along the longitudinal direction of the core rod 300 and inserted into the guide grooves 340 at both sides of the enlargement block 400, It is preferable that the coupling protrusions 420 are formed so as to be coupled to the coupling protrusions 300.

The block drawing hole 210 is formed at a predetermined interval along the longitudinal direction of the hollow shaft 200 and is provided to include the expansion block 400. The block drawing hole 210 is formed in the block drawing- It is preferable that the expansion block provided in the block drawing-out hole is drawn out earlier than the expansion block provided in the block drawing-out hole at the rear end.

The other surface of the expansion block 400 may be convexly formed, and a plurality of pressing protrusions 430 may be formed on the surface of the expansion block 400 in a regular or irregular manner.

According to the vibration-free rock breaking apparatus having the above-described structure, since the expansion block is slidably moved on the core rod, noise or damage due to minimal friction with the core rod is minimized and the structure is simple, It is possible to enhance the reliability and to improve the quality of the product. Therefore, it is possible to reduce the noise caused by the rock crushing operation, It is possible to prevent foreign matter such as dust from flowing into the apparatus, thereby reducing the maintenance cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a conventional rock mass crushing apparatus,
FIG. 2 is a view showing the operation state of the rock crushing apparatus of FIG. 1,
FIG. 3 is a perspective view of a vibration-free rock breaking apparatus according to the present invention,
Fig. 4 is an exploded perspective view of Fig. 3,
FIG. 5A is a sectional view of FIG. 3,
FIG. 5B is a cross-sectional view showing the core rod guide rail formed on the inner peripheral surface of the cap in FIG. 5A,
6 is a perspective view of a core rod according to the present invention,
7 is a perspective view showing one side of an expansion block closely attached to an inclined surface according to the present invention,
8A and 8B are diagrams showing a surface protruding shape of an expansion block according to the present invention,
FIG. 9 is a perspective view of the extension block according to the present invention,
FIG. 10 is a state in which the extension block of FIG. 9 is coupled to the core rod,
FIG. 11A is a diagram illustrating an installation state of an expansion block when two expansion blocks according to the present invention are provided,
FIG. 11B is a diagram showing an installation state of an expansion block when four expansion blocks according to the present invention are provided,
12A is a state before rocking of a rock through a vibration-free rock breaking apparatus according to the present invention,
12B is a fragmentary state view of the rock mass through the vibration-free rock mass crushing apparatus according to the present invention,
13 is a perspective view of a vibration-free rock mass crushing apparatus in which two expansion blocks are protruded at regular intervals along the longitudinal direction of the hollow shaft according to the present invention,
Fig. 14 is a sectional view of Fig. 13; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vibration-free rock breaking apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The vibration-free rock breaking apparatus according to the present invention is installed at the tip of a moving means and is inserted into an insertion hole (10) formed in a rock to break the rock through expansion.

The moving means is a device capable of moving on the ground with a boom capable of forward and backward and rotational movements such as an excavator or a crane.

3 to 14, the vibration-free rock breaking apparatus of the present invention includes a cylinder 100, a hollow shaft 200, a core rod 300, and an expansion block 400.

The cylinder 100 is mounted on the front end of the boom of the moving means, and the rod 110 is moved forward and backward according to the operation of the piston inside.

That is, the piston 411 moves back and forth according to the oil pressure supplied to the cylinder 410, so that the rod 412 connected to the piston 411 operates forward and backward along the supply direction of the oil pressure.

The hollow shaft 200 is hollow and has one end fixed to an end of the cylinder 100 so that the rod 110 is positioned inside the hollow shaft 200. The hollow shaft 200 is inserted into the insertion hole 10, A block drawing hole 210 is formed at a portion of the outer circumferential surface facing each other for drawing out the expansion block 400.

The block drawing holes 210 may be formed on the outer circumferential surface of the hollow shaft at intervals of 180 degrees so that two expansion blocks may be drawn out as shown in FIG. 11A, or four block drawing holes may be formed at intervals of 90 degrees. Four expansion blocks may be installed to be withdrawn.

The hollow shaft 200 is preferably formed in a circular shape in cross section for smooth insertion into the insertion hole 10, and at the end of the hollow shaft 200, the core rod 300 and the expansion block 400 are coupled, The cap 220 is helically connected.

Therefore, the inside of the hollow shaft can be opened through the cap 220. [ At this time, it is preferable that the cap 220 is formed so that the outer diameter of the hollow shaft 200 decreases toward the end as the hollow shaft 200 is inserted into the insertion hole 10.

As shown in FIG. 5B, a core rod guide rail 240 may be formed on an inner circumferential surface of the cap 220 to guide the core rod when the core rod is moved forward. The reason why the core rod guide rail 240 is formed is that the core rod 300 can be moved in either direction by applying pressure to the expansion block due to the strength of the rock during the forward movement of the core rod, So that the core rod can be moved forward in the direction of the center of the cap 220, so that the expanding operation of the expansion block facing each other can be smoothly performed.

The hollow shaft 200 has a longer length as the core rod and the rod are housed therein. For the sake of convenience in manufacturing, the hollow shaft 200 may be divided into a plurality of unit shafts and formed as one shaft through mutual coupling.

Since the end portion of the hollow shaft is coupled with the cap and the block drawing hole covers the expansion block, a path through which foreign matter such as stone dust is introduced into the hollow shaft 200 is blocked.

Accordingly, it is possible to prevent the components such as the core rod and the expansion block from being damaged due to the stone powder generated in the rock breaking process, and as a result, the maintenance cost can be reduced by extending the service life of the component.

One end portion of the core rod 300 is connected to the rod 110 while being accommodated in the hollow shaft 200 and is connected to the rod 110 in accordance with the forward and backward movement of the rod 110 And is operated to move back and forth correspondingly.

The outer shape of the core rod 300 is formed as a sloped surface 310 which is gradually inclined downward toward the end.

When the two expansion blocks are provided, one surface of the core rod 300 is formed as a sloped surface 310, and the other surface of the core rod 300 is formed as a plate, (Not shown).

Of course, when the four expansion blocks are provided, the slope should be formed as an inclined surface, and means for guiding the expansion block to each corner portion should be provided.

The surface of the inclined surface 310 may be formed as a flat flat surface or an arcuate curved surface and the one surface shape of the expansion block 400 may be changed corresponding to the surface shape of the inclined surface 310 .

The extension block 400 is connected to the core rod 300 and is exposed to the outside through the block lead-out hole 210. The extension block 400 is provided on both sides of the parallel surface 320 of the core rod 300, One side of which is engaged with the inclined surface 310 so as to be slid on the core rod 300.

Accordingly, the expansion block 400 moves on the core rod 300 when the core rod 300 vibrates back and forth according to the operation of the cylinder 100, and the expansion block 400 is moved along the core rod 300, (210), or drawn out from the block drawing-out hole, and extend to extend outward on both sides of the core rod (300).

At this time, one or more lubricant grooves 330 are formed in the inclined surface 310 along the longitudinal direction of the core rod 300. The reason for forming the lubricant groove is to allow the sliding movement of the expansion block 400 smoothly when the core rod 300 vibrates back and forth.

Further, it is preferable that a second lubricant groove 410 is formed on one surface of the expansion block 400 in a regular or irregular manner. The reason why the second lubricant oil groove is formed is to provide a groove between the inclined surface and the expansion block in which lubricating oil such as grease can be received, so that the sliding movement of the expansion block can be performed smoothly.

Particularly, when the lubricant grooves 330 and the second lubricant grooves 410 are formed together, the lubricant oil accommodated in the lubricant grooves and the second lubricant grooves can move together with each other, The noise can be reduced and the movement can be smoothly performed.

Here, it is a matter of course that the core rod 300 is provided with a lubricant oil injection hole 350 for injecting lubricant into the internal space. Therefore, lubricating oil such as grease is injected through the lubricating oil injection hole 350 to lubricate between the lubricating oil groove and the second lubricating oil groove, and between the block drawing-out hole and the enlarging block, thereby facilitating smooth movement of the enlarging block.

Guide grooves 340 are formed at both sides of the parallel surface 320 at a predetermined depth along the longitudinal direction of the core rod 300. Both sides of the enlargement block 400 are inserted into the guide grooves 340 And a coupling protrusion 420 is formed so as to be coupled to the core rod 300.

The extension block 400 can be slid on the core rod 300 without detaching from the core rod 300 due to the formation of the guide groove 340 and the coupling protrusion 420.

Of course, when the expansion block 400 is coupled, the coupling protrusion 420 is inserted into the guide groove 340 at the end of the core rod 300 to connect the expansion block to the core rod.

On the other hand, the surface of the expansion block 400, that is, the surface thereof, is formed to be convex. For example, as shown in FIG. 8A, or may be formed to have a triangular shape by projecting the surface so as to be inclined toward the center as shown in FIG. 8B.

As shown in FIG. 8A, when the surface exposed to the outside of the expansion block is convexly formed, when the rock is expanded, pressure is applied to the rock bed by allowing the center portion to be in contact with the rock bed first In order to make it possible.

At this time, a plurality of pressing protrusions 430 are formed on the surface of the expansion block 400 in a regular or irregular manner. Due to the formation of the pressing protrusions, the pressing protrusions are contacted with each other without surface contact with the surface of the rock mass during expansion, so that the rock can be easily broken by pressurizing the rock.

9 and 10, a moving guide 450 made of an alloy of an aluminum bronze material may be coupled to one side of the expansion block 400. As shown in FIG. The reason why the movement guide 450 is engaged is to prevent damage due to friction when the expansion block 400 is slid on the core rod 300.

Aluminum bronze is a general term for a Cu-Al alloy in which 2-15% of aluminum (Al) is added to copper (Cu). Practical alloys contain small amounts of Fe, Ni and Mn, Is called special aluminum bronze. This alloy has an extremely high strength (with a tensile strength of 46 kg / mm 2), a low specific gravity (8.5) and excellent corrosion resistance.

A third lubricant oil groove 451 is formed on one side of the movement guide hole 450 and a movement guide hole 450 is formed on one side of the movement guide hole 450, It is preferable that coupling projections 452 are formed on both sides of the core rod 300 so as to be inserted into the guide grooves 340 formed to have a predetermined depth along the longitudinal direction of the core rod 300 and to be coupled to the core rod 300.

The third lubricant oil groove 451 has the same structure as the second lubricant oil groove 410 of the first embodiment and the coupling protrusion 452 can be formed in the same structure as the coupling protrusion 420 of the first embodiment.

Meanwhile, the hollow shaft 200 of the present invention is provided with a pair of latching rods 230 through which the core rods 300 are positioned one by one on opposite parallel faces 320 of the core rod 300.

The latching bar 230 functions to cut off the maximum pull-out distance of the core rod 300, and functions as a stopper.

Therefore, when the core rod is advanced for expansion of the expansion block, the maximum movement distance of the core rod can be adjusted to prevent damage to the component.

13 and 14, the block drawing holes 210 are formed at regular intervals along the longitudinal direction of the hollow shaft 200, and each of the block drawing holes has the extension block 400 Respectively.

Therefore, when the core rod 300 is moved forward, the extension block provided at the block leading-out hole at the front end is drawn out earlier than the extension block provided at the block drawing-out end at the rear end, so that the expansion block at the front end is first brought into contact with the rock The rock is pressed against the rock, and then the expansion block at the rear end comes into contact with the rock to effectively break the rock.

In the operation state of the vibration-free rock breaking apparatus of the present invention constructed as above, when the rock obstructs the course in the excavation step of a tunnel or the like, a plurality of insertion holes 10 are formed in the rock bed. Thereafter, the vibration-free rock breaking apparatus of the present invention provided at the end of the boom of the moving means is inserted into the insertion hole (10).

In this state, when the hydraulic pressure is supplied to the cylinder in this state, the piston moves forward to move the rod 110 forward due to the oil pressure. As the rod 110 advances, the core rod 300 advances, The block 400 is extended outwardly through the block drawing hole 210 and expanded.

The expanding block expanding outward will expand the insert hole and perform the crushing of the rock.

After the rock is broken, the rod 110 is moved backward to pull the extended block extended by the backward movement of the core rod 300 into the block drawing hole 210, insert it into the other insertion hole 10, Repeat to break the rock.

As described above, according to the present invention, the rocking block is expanded by expanding the expansion block through a simple operation, and the pressure transmitted to the core rod is transmitted to the expansion block to the maximum extent, thereby effectively breaking the rocking block.

10: insertion hole 100: cylinder
110: rod 200: hollow shaft
210: a block withdrawal hole 220: a cap
230: latching bar 240: core rod guide rail
300: core rod 310: inclined surface
320: parallel surface 330: lubricant groove
340: guide groove 350: lubricating oil injection hole
400: Expansion block 410: Second lubricant groove
420: coupling projections 430: pressing projections
450: moving guide 451: third lubricating oil groove
452:

Claims (10)

A rock breaking apparatus for rocking a rock by being inserted into an insertion hole (10) formed in a rock and extending the insertion hole,
A cylinder (100) mounted on a tip of a moving means and provided with a rod (110) which moves back and forth according to an internal piston motion;
Two or four block draw-out holes 210 are formed on the outer circumferential surface of the cylinder 100 so as to be opposed to each other with the rod 110 fixed to the end of the cylinder 100 and inserted into the insertion hole 10 A hollow shaft (200);
A core rod 300 connected to an end of the rod 110 and accommodated in the hollow shaft 200 and formed of a sloped surface 310 that is inclined gradually toward the end of the surface facing the block drawing hole 210, ;
One end of the core rod 300 is coupled to the core rod 300 and the other end of the core rod 300 is inserted into the block lead-out hole 210, And an expansion block (400) slidably moved on the core rod (300) in a forward / backward oscillation mode and being drawn in or drawn out from the block drawing hole (210)
In the case where two extension blocks 400 are installed, one side of the outer circumferential surface of the core rod 300 facing each other is connected to the inclined surface 310 , And the other surface is formed as a plate and is formed of parallel planes (320) parallel to each other.
The method according to claim 1,
Wherein one or more lubricant grooves (330) are formed in the inclined surface (310) along the longitudinal direction of the core rod (300).
3. The method of claim 2,
And a second lubricant groove (410) is formed on one surface of the expansion block (400) in a regular or irregular manner.
delete The method according to claim 1,
Guide grooves 340 are formed on both sides of the parallel surface 320 at a predetermined depth along the longitudinal direction of the core rod 300,
Wherein a coupling protrusion (420) is formed on both sides of the expansion block (400) so as to be inserted into the guide groove (340) and to be coupled to the core rod (300).
6. The method of claim 5,
A third lubricant oil groove 451 is formed on one side of the movement guide 450 which is in contact with the core rod 300, And a coupling protrusion (452) is formed on both sides of the movement guide (450) to be inserted into the guide groove (340) and to be coupled to the core rod (300).
The method according to claim 1,
The block drawing hole 210 is formed at a predetermined interval along the longitudinal direction of the hollow shaft 200 and is provided with the extension block 400,
Wherein the expansion block provided on the block drawing-out hole of the front end of the core rod 300 is drawn out earlier than the expansion block provided on the rear block drawing-out hole.
The method according to claim 1,
Wherein the other surface of the expansion block (400) is convexly formed, and a plurality of pressing protrusions (430) are regularly or irregularly formed on the surface of the expansion block (400).
The method according to claim 1,
Wherein the core rod (300) is provided with a lubricant injection hole (350) for injecting lubricant into the internal space.
The method according to claim 1,
A cap 220 is detachably coupled to an end of the hollow shaft 200,
The inner circumferential surface of the hollow shaft 200 or the inner circumferential surface of the cap 220 is provided with a core rod guide rail (not shown) for guiding the core rod 300 to be moved in any one direction by the strength of the rock during forward movement of the core rod 300 240) is formed on the outer circumferential surface of the rocking plate.

Images